Science
Friday, October 18th (week 8)
Day: 11hr 10min
Rise: 7:24
Moon:
full moon, 100%
illuminated
Objectives: I will review matter.
Set:6:35
Warm Up!
Question: Use your vocabulary sheet to create a
concept map/web for this unit.
Important Information
Due Today: Nothing!
Homework Tonight: Studying is always a
good idea.
Upcoming Events: What the Matter test
Wednesday! End of quarter Friday! Grades
close Friday.
Just what you’ve all been waiting
for…
The
Posttest!!!!!
1) A block of aluminum occupies a
volume of 15.0 mL and weighs 40.5 g.
What is its density?
D=2.7g/mL
2) Mercury metal is poured into a graduated cylinder that
holds exactly 22.5 mL. The mercury used to fill the
cylinder weighs 306.0 g. From this information, calculate
the density of mercury.
D=13.6 g/mL
3) What is the weight of the ethyl alcohol that exactly
fills a 200.0 mL container? The density of ethyl alcohol
is 0.789 g/mL.
M=157.8 g
4) A rectangular block of copper metal weighs 1896 g.
The dimensions of the block are 8.4 cm by 5.5 cm by
4.6 cm. From this data, what is the density of copper?
D=8.92 g/cm3
5) A flask that weighs 345.8 g is filled with 225 mL of
carbon tetrachloride. The weight of the flask and carbon
tetrachloride is found to be 703.55 g. From this
information, calculate the density of carbon tetrachloride.
D= 1.59 g/mL
6) Calculate the density of sulfuric acid if 35.4 mL of
the acid weighs 65.14 g.
D=1.84 g/mL
7) Find the mass of 250.0 mL of benzene. The density
of benzene is 0.8765 g/mL.
M= 219.13 g
8) A block of lead has dimensions of 4.50 cm by 5.20
cm by 6.00 cm. The block weighs 1587 g. From this
information, calculate the density of lead.
D=11.3 g/cm3
9) 28.5 g of iron shot is added to a graduated cylinder
containing 45.50 mL of water. The water level rises to
the 49.10 mL mark, from this information, calculate
the density of iron.
D=7.92 g/mL
10) What volume of silver metal will weigh exactly
2500.0 g. The density of silver is 10.5 g/cm3.
V=238.1 cm3
12) You are given the following information: mass =
48 g; volume=24 cm3. What is the density of this
substance?
D=2 g/cm3
13. If you have a rectangular gold brick that is 2 cm by
3 cm by 4 cm and has a mass of 48 g, what is its
density?
D=2 g/cm3
14. Bob, who weighs 150 pounds, found a rock. What
is the density of a rock if its mass is 36 g and its
volume is 12 cm3?
D=3 g/cm3
15. If a block of wood has a density of 0.6 g/cm3 and a
mass of 120 g, what is its volume?
V=200 cm3
16. What is the mass of an object that has a volume
of 34 cm3 and a density of 6 g/cm3?
M=204 g
17.
18.
19.
20.
21.
22.
23.
D
A
K
L
N
M
J
24.
25.
26.
27.
28.
29.
30.
F
I
C
E
H
B
G
1. Kool-Aid dissolved into water is always a delicious
treat.
2. The water passing over the earth’s surface for
millions of years created the Grand Canyon.
3. Fish use the oxygen that is dissolved in the water.
4. Sodas come from the plant full of carbon dioxide.
That’s why after we open them; if we shake them
up we still see bubbles.
5. I like to drink homemade chocolate milk.
6. My mom always tells me to gargle with salt water
when I have a sore throat.
7. Acid rain is by pollutants mixing with rain.
8. I never put powdered lemonade in my water
bottle; it tastes like detergent.
9. Sometimes we can have minerals and metals that
may be dissolved in water. This may cause tap
water to taste as if pennies were soaked in it.
10. She hates the taste of barbeque sauce since it has
ketchup and Worcestershire sauce in it.
Gas
Melting
Solid
Freezing
Liquid
QN vs QL
1. It was so cold I had to wear gloves! QL
2. She is 5 feet 9 inches tall. QN
3. The outlet has 2 plugs. QN
4. There are 23 Smarties in a roll. QN
5. His hair is pink. QL
6. It takes me 23 minutes to get to school. QN
7. I spent tons of money on groceries yesterday.
8. The dog weighs 18 pounds! QN
9. The class average was low. QL
10. She scored a 9 out of 10. QN
QL
1.What is the connection between a student’s GPA
and the amount of time they spend watching TV
each week?
2.The amount of time spent watching TV
3.The student’s GPA
4.Same amount of sleep each night
Problem
Independent
Variable
Dependent
Variable
1
2
3
Constant or
Controlled
Variable
4
5. The amount of rain
6. Do grapes taste sweeter if there is less rain
during the growing season?
7. The same type of grape
8. The sweetness of the grapes
Problem
Independent
Variable
Dependent
Variable
Constant or
Controlled
Variable
6
5
8
7
9. The amount of light that each plant receives
10. The same type of tomato plant used
11. Does the amount of sunlight a tomato plant
receives affect the number of tomatoes
produced?
12. The number of tomatoes produced.
Problem
Independent
Variable
Dependent
Variable
Constant or
Controlled
Variable
11
9
12
10
Definition
Name of Step
The reason you are doing this
Purpose
experiment.
Educated guess/prediction as to
Hypothesis
what the results will be.
When you gather information and
Research
materials needed for this lab.
Steps used to design and perform
Procedure
an experiment.
A summary or answer to the
Conclusion
problem based on the data.
Scientists should never assume that Repeat the
the first result will always occur.
work
Data that was collected and analyzed
Results
during the experiment.
Order
1
3
2
4
6
7
5